Add-ons
Miscellaneous
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Timeline
Timestamp
Requires Restart
Inserts the current date/time into a message or an input field in the browser.
Visit my Timestamp site for recent versions and news.
Tiny JavaScript Debugger
TinyJSD is a JavaScript debugger for privileged code running Mozilla products like Firefox, Thunderbird, SeaMonkey. It serves to debug the application as well as extensions written in JavaScript.
TMS Bulk SMS
Requires Restart
Send SMS text messages directly from Thunderbird, without using a tethered phone! Integrates with Thunderbird's Address Book and allows SMS mailing lists for quick and easy bulk or individual messaging. Uses Flash Media Group's SMS service.
Toggle Development Profile Prefs
Toggles Development Profile Preferences On When Enabled And Off When Disabled.
Toggle Proxy
Requires Restart
The move to Webextensions by Mozilla for Firefox 57+ has made it impossible to modify about:config, this holds Firefox proxy settings. Therefore, this and many other addons will become obsolite from Firefox 57+ onwards unless Mozilla update the API.
ToneQuilla
Requires Restart
Adds a new action to mail filters to allow playing a particular sound when the filter matches. Also includes several sample sound files.
For Thunderbird 78 support of sounds, please check out Filtaquilla 3.1
Toodledo Sync
Requires Restart
ToodledoSync is an extension that I did for my need of a GTD system using Thunderbird and Toodledo.
IT IS NOT MAINTENED ANYMORE as I do not have any time. I'll give the (ugly) code to anyone willing to maintain it.
Toolbar Buttons
Adds toolbar buttons to the customize toolbar window in several programs including Firefox, Thunderbird and SeaMonkey. Some of the buttons make commonly preformed actions quicker, others add new functionality.
traduku
Requires Restart
Translate text from English and other languages into Esperanto.
Traduku tekston de la angla kaj aliaj lingvoj al Esperanto.
Uses/uzas https://lingvo.org/traduku (try as side bar/provu kiel flankfenestro).
Trashcan
Requires Restart
Have you ever accidentally deleted an event and didn't notice? Undo is no longer available? Then this extension is for you! All deleted items are put into a special Trashcan calendar for your safety.
Tuta Mail - Quick Access
Quick Access to TutaMail aka Tutanota in a new tab with just one click on a simple, stylish icon button on your Spaces toolbar.
Tv program
Requires Restart
It shows popular stations TV program in listings, alerts and bubble infos. It's only for Czech and Slovak TV stations.
Localization: sk, cs, hu, en
Ubuntu Unity unread count and quicklist
Requires Restart
Notify Unity of new mails in Thunderbird. Also, right click Thunderbird icon and get new quicklist items: Compose new mail and Contacts.
Based in awn-notif by Thesa aka Florian Birée
Unified Folders Debugging
An add-on to help debugging problems with the Unified Folders mode.
Unifinder Views
Requires Restart
Add more views to the unifinder (event list) in Sunbird and Lightning.
UnInbox - Quick Access
Quick Access to UnInbox in a new tab with just one click on a simple, stylish icon button on your Spaces toolbar.
To create your own collections, you must have a Mozilla Add-ons account.
